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BS 5839-6 Grade C/D/F Combined Certificate

A Grade C/D/F Combined Certificate covers the design, installation, and commissioning of simpler domestic fire alarm systems. Grade D (mains-powered interlinked detectors) is the most common domestic requirement. Grade C adds a control panel, and Grade F uses battery-powered detectors.

BS 5839-6:2019+A1:2020, Building Regulations Approved Document BValid: One-off (annual testing by householder)

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Sample Grade C/D/F Combined certificate

Sample BS 5839-6 Grade C/D/F Combined Certificate certificate created with CertBox, showing the professional PDF layout with system grade (c/d/f) and category, detector schedule with locations, correct positioning per bs 5839-6

Sample Grade C/D/F Combined with fictional data. All personal details shown are fake.

What it covers

  • System grade (C/D/F) and category
  • Detector schedule with locations
  • Correct positioning per BS 5839-6
  • Interlinking verification
  • Individual detector activation test
  • Battery test for Grade F

Who needs a Grade C/D/F Combined?

Electricians installing domestic detectors
Landlords
Building control
Homeowners after renovation

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Frequently asked questions about Grade C/D/F Combined

What is the difference between Grade A, C, D, and F?
Grade A uses BS EN 54 components with a control panel (commercial-style). Grade C uses conventional detectors with a control panel. Grade D uses mains-powered interlinked detectors (most common). Grade F uses standalone battery-powered detectors (simplest).
Which grade do I need?
Most standard homes require Grade D (mains interlinked). Grade A or C is typically required for HMOs and higher-risk dwellings. Grade F is only acceptable where no mains power is available or as a temporary measure.

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